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Kuchur O, Pogodaeva S, Shcherbakova A, Tsymbal S. Atox1-cyclin D1 loop activity is critical for survival of tumor cells with inactivated TP53. Biosci Rep 2024; 44:BSR20240389. [PMID: 38813981 PMCID: PMC11166628 DOI: 10.1042/bsr20240389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 05/27/2024] [Accepted: 05/29/2024] [Indexed: 05/31/2024] Open
Abstract
The search for relevant molecular targets is one of the main tasks of modern tumor chemotherapy. To successfully achieve this, it is necessary to have the most complete understanding of the functioning of a transcriptional apparatus of the cell, particularly related to proliferation. The p53 protein plays an important role in regulating processes such as apoptosis, repair, and cell division, and the loss of its functionality often accompanies various types of tumors and contributes to the development of chemoresistance. Additionally, the proliferative activity of tumor cells is closely related to the metabolism of transition metals. For example, the metallochaperone Atox1 - a copper transporter protein - acts as a transcription activator for cyclin D1, promoting progression through the G1/S phase of the cell cycle. On the other hand, p53 suppresses cyclin D1 at the transcriptional level, thereby these proteins have divergent effects on cell cycle progression. However, the contribution of the interaction between these proteins to cell survival is poorly understood. This work demonstrates that not only exists a positive feedback loop between Atox1 and cyclin D1 but also that the activity of this loop depends on the status of the TP53 gene. Upon inactivation of TP53 in A549 and HepG2 cell lines, the expression of ATOX1 and CCND1 genes is enhanced, and their suppression in these cells leads to pronounced apoptosis. This fundamental observation may be useful in selecting more precise interventions for combined therapy of p53-negative tumors.
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Affiliation(s)
- Oleg A. Kuchur
- National Research University ITMO, 197101 St. Petersburg, Russia
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Sha A, Chen H, Zhao X. Exploration of the mechanisms of improving learning and memory in the offspring of aging pregnant mice by supplementation with Paris polyphylla polysaccharide based on the P19-P53-P21 and Wnt/β-catenin signaling pathways. JOURNAL OF ETHNOPHARMACOLOGY 2024; 318:116883. [PMID: 37422103 DOI: 10.1016/j.jep.2023.116883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 07/03/2023] [Accepted: 07/05/2023] [Indexed: 07/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE First recorded in "Sheng Nong's herbal classic", Paris polyphylla is used to treat diseases, such as convulsions, head shaking and tongue fiddling, and epilepsy. Studies have shown that the ability of three Liliaceae polysaccharides in improving learning and memory may be related to the P19-P53-P21 and Wnt/β-catenin signaling pathways. Moreover, a link between these two signaling pathways and the possible neuroprotective impact of Paris polyphylla polysaccharide has been proposed. AIM OF THE STUDY We explored the mechanisms of improving learning and memory in the offspring of pre-pregnant parental mice and D-galactose-induced aging pregnant mice by supplementation with P. polyphylla polysaccharide based on the P19-P53-P21 and Wnt/β-catenin signaling pathways. STUDY DESIGN AND METHODS After 3 weeks of supplementation of D-galactose-induced pre-pregnant parental mice with P. polyphylla polysaccharide component 1 (PPPm-1), the male and female parental mice mated in cages. The D-galactose-induced pregnant mice were continued to be supplemented with PPPm-1 for 18 days before delivery of the offspring. Behavioral experiments (Morris water maze and dark avoidance experiments) were conducted on the offspring mice born 48 days later to determine whether PPPm-1 had the effect of improving their learning and memory. Based on the P19/P53/P21 and Wnt/β-catenin signaling pathways, the mechanisms of PPPm-1 in improving learning and memory in offspring mice were further investigated. RESULTS Offspring mice administered low- or high-dose PPPm-1 exhibited stronger motor and memory abilities in behavioral experiments than the aging model of offspring mice. Enzyme-linked immunosorbent assay and real-time polymerase chain reaction revealed that the expressions of P19 and P21 mRNA and protein were inhibited in offspring mice administered low- and high-dose PPPm-1. However, P53 expression was inhibited in the low-dose PPPm-1 offspring group but promoted in the high-dose PPPm-1 offspring group. Additionally, PPPm-1 could effectively activate the Wnt/β-catenin signaling pathway, promote the expressions of Wnt/1, β-catenin, CyclinD1, and TCF-4 mRNA and protein, and inhibit GSK-3β mRNA and protein expression to improve the learning and memory abilities of offspring mice. CONCLUSION Thus, PPPm-1 improved the learning and memory abilities in the offspring of aging pregnant mice by acting on the P19-P53-P21 and Wnt/β-catenin signaling pathways.
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Affiliation(s)
- Ailong Sha
- School of Teacher Education, Chongqing Three Gorges University, Chongqing, 404120, China; School of Biology and Food Engineering, Chongqing Three Gorges University, Chongqing, 404120, China.
| | - Hongrun Chen
- School of Biology and Food Engineering, Chongqing Three Gorges University, Chongqing, 404120, China
| | - Xuewen Zhao
- School of Biology and Food Engineering, Chongqing Three Gorges University, Chongqing, 404120, China
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Wang Z, Chen H, Xue L, He W, Jiang L, Wang Z, Wu H. Proteomic screening identifies PML/p53 axis as a potential treatment target of facial nerve schwannomas. Am J Transl Res 2020; 12:4237-4250. [PMID: 32913501 PMCID: PMC7476122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 07/04/2020] [Indexed: 06/11/2023]
Abstract
Facial nerve schwannomas (FNS) represents one of the more difficult treatment paradigms in neurotology. The aim of this study is to investigate the molecular alterations of FNS, thus providing potential targets treatable in the tumour. We for the first time suggest that the deficiency of merlin (the product of NF2 tumour suppressor) is probably one of the key mechanisms underlying FNS tumourigenesis, although no disease-causing NF2 mutations were demonstrated in tumour samples. TMT-labeled spectrometry analysis was used to identify the proteome of FNS relative to nerve controls. Eighty-four significantly deregulated proteins were identified, among which the PML tumour suppressor showed the most significantly increased expression. The PML protein was distributed in the nucleoplasm of non-tumorous Schwann cells, whereas it was preferentially confined to the cytoplasm of FNS cultures. Overexpression of PML and p53, partner proteins positively regulating each other to trigger apoptosis, was further confirmed in FNS tissues/cultures, and this correlated with a significant decrease in the proliferation of FNS cultures in comparison to Schwann cells. It is therefore probable that PML-p53 overexpression may occur as part of protective cellular mechanisms in response to the proliferation signal mediated by loss of merlin in FNS, in accordance with the fact that the tumour is benign slow-growing. This hypothesis was supported by the finding that the p53 activator nutlin-3 could exert dose-dependent inhibitory effects on FNS cultures via a cooperative induction of PML-p53 levels. Thus, the current study may present a potential treatment target directed on the molecular mechanisms of this disease.
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Affiliation(s)
- Zhigang Wang
- Department of Otolaryngology Head & Neck Surgery, The Ninth People’s Hospital, Shanghai Jiao Tong University School of MedicineShanghai, China
- Ear Institute, School of Medicine, Shanghai Jiao Tong UniversityShanghai, China
- Shanghai Key Laboratory of Translational Medicine on Ear and Nose DiseasesShanghai, China
| | - Hongsai Chen
- Department of Otolaryngology Head & Neck Surgery, The Ninth People’s Hospital, Shanghai Jiao Tong University School of MedicineShanghai, China
- Ear Institute, School of Medicine, Shanghai Jiao Tong UniversityShanghai, China
- Shanghai Key Laboratory of Translational Medicine on Ear and Nose DiseasesShanghai, China
| | - Lu Xue
- Department of Otolaryngology Head & Neck Surgery, The Ninth People’s Hospital, Shanghai Jiao Tong University School of MedicineShanghai, China
- Ear Institute, School of Medicine, Shanghai Jiao Tong UniversityShanghai, China
- Shanghai Key Laboratory of Translational Medicine on Ear and Nose DiseasesShanghai, China
| | - Weiwei He
- Department of Otolaryngology Head & Neck Surgery, The Ninth People’s Hospital, Shanghai Jiao Tong University School of MedicineShanghai, China
- Ear Institute, School of Medicine, Shanghai Jiao Tong UniversityShanghai, China
- Shanghai Key Laboratory of Translational Medicine on Ear and Nose DiseasesShanghai, China
| | - Lianying Jiang
- Department of Neurology, The People’s Hospital of Shanghai Pudong New Area Affiliated to Shanghai University of Medicine and Health SciencesShanghai, China
| | - Zhaoyan Wang
- Department of Otolaryngology Head & Neck Surgery, The Ninth People’s Hospital, Shanghai Jiao Tong University School of MedicineShanghai, China
- Ear Institute, School of Medicine, Shanghai Jiao Tong UniversityShanghai, China
- Shanghai Key Laboratory of Translational Medicine on Ear and Nose DiseasesShanghai, China
| | - Hao Wu
- Department of Otolaryngology Head & Neck Surgery, The Ninth People’s Hospital, Shanghai Jiao Tong University School of MedicineShanghai, China
- Ear Institute, School of Medicine, Shanghai Jiao Tong UniversityShanghai, China
- Shanghai Key Laboratory of Translational Medicine on Ear and Nose DiseasesShanghai, China
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Chen H, Xue L, Huang H, Wang H, Zhang X, Zhu W, Wang Z, Wang Z, Wu H. Synergistic effect of Nutlin-3 combined with MG-132 on schwannoma cells through restoration of merlin and p53 tumour suppressors. EBioMedicine 2018; 36:252-265. [PMID: 30274821 PMCID: PMC6197711 DOI: 10.1016/j.ebiom.2018.09.042] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 09/14/2018] [Accepted: 09/24/2018] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND The great majority of sporadic vestibular schwannomas (VSs) are due to the mutations of the NF2 gene encoding merlin. Sporadic VSs exhibit variable growth patterns and only a small fraction of the tumours are fast-growing; however, the underlying mechanisms remain undefined. METHODS DNA sequencing and dosage analysis were used to identify the NF2 mutation status in sporadic schwannomas. The expression and sub-cellular localization of merlin and p53-MDM2 were assessed by immunoblotting, qRT-PCR and immunofluorescence. In vitro and in vivo studies were performed to reveal the effects of Nutlin-3 (a MDM2 inhibitor) and/or MG-132(a proteasome inhibitor) on schwannomas. The proliferation of schwannoma cells was assessed by CCK-8 assay, EdU staining and Flow cytometry analysis. FINDINGS Double genetic hits of NF2 tended to occur in fast-growing tumours, characterized by the absence of merlin. The deregulation of p53-MDM2 was demonstrated to mediate merlin-deficient tumour growth, characterized by a nuclear accumulation of stabilized MDM2, contributing to a nuclear export of p53 for degradation. Nutlin-3 blocked the proliferation of schwannoma cells via a cooperative recovery of merlin and p53, accompanied by the shuttling of both proteins from the cytoplasm to the nucleus. We further demonstrated a difference in the sensitivity to Nutlin-3 between schwannoma cells with and without merlin expression. Nutlin-3 combined with MG-132 narrowed this between-group difference and triggered stronger inhibitory effects on the growth of schwannomas through coordinated reactivation of p53. INTERPRETATION These findings present treatment strategies directed on the pathogenesis of sporadic schwannomas. FUND: National Natural Science Foundation of China.
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Affiliation(s)
- Hongsai Chen
- Department of Otolaryngology Head & Neck Surgery, The Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Ear Institute, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China; Shanghai Institute of Precision Medicine, The Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Lu Xue
- Department of Otolaryngology Head & Neck Surgery, The Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Ear Institute, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - He Huang
- Department of Otolaryngology Head & Neck Surgery, The Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Ear Institute, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - Hantao Wang
- Department of Otolaryngology Head & Neck Surgery, The Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Ear Institute, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - Xiaoman Zhang
- Department of Otolaryngology Head & Neck Surgery, The Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Ear Institute, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - Weidong Zhu
- Department of Otolaryngology Head & Neck Surgery, The Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Ear Institute, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - Zhigang Wang
- Department of Otolaryngology Head & Neck Surgery, The Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Ear Institute, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - Zhaoyan Wang
- Department of Otolaryngology Head & Neck Surgery, The Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Ear Institute, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China.
| | - Hao Wu
- Department of Otolaryngology Head & Neck Surgery, The Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Ear Institute, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China.
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Liu C, Sun W, Li N, Gao J, Yu C, Wang C, Sun J, Jing S, Chen J, Li H. Schisantherin A Improves Learning and Memory of Mice with D-Galactose-Induced Learning and Memory Impairment Through Its Antioxidation and Regulation of p19/p53/p21/Cyclin D1/CDK4/RB Gene Expressions. J Med Food 2018; 21:678-688. [PMID: 29851371 DOI: 10.1089/jmf.2017.4090] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Schisantherin A (SCA) was evaluated for possible function in restoring the learning and memory impairment induced by D-galactose in mice. ICR mice were treated with D-galactose subcutaneously (220 mg·kg-1), and followed by SCA in different doses (1.25, 2.50 and 5.00 mg·kg-1, administered orally) for 42 days. Effects of SCA on learning and memory were examined by step-through tests and Morris water maze tests. The activity of superoxide dismutase (SOD), the content of malondialdehyde (MDA) in the peripheral blood and hippocampus of mice were assayed by water-soluble tetrazolium-1 (WST-1) and thiobarbituric acid (TBA) methods. The contents of 8 hydroxy deoxy guanosine (8-OHdG) in the hippocampus of mice were detected by immunosorbent assay methods, respectively. Quantitative real-time PCR and Western Blot were respectively used to detect the expression of p19, p53, p21, cyclin D1, CDK4 and RB genes, and the phosphorylation of RB in the hippocampus of mice. We found that SCA significantly improved the learning and memory impairment induced by D-galactose in mice. After SCA treatment, SOD activity was increased and the content of MDA was decreased in both peripheral blood and hippocampus of mice. 8-OHDG content was also decreased in the hippocampus of mice. Furthermore, the expression of p19, p53 and p21 genes was reduced and the expression of cyclin D1 and CDK4 and the phosphorylation of RB protein were elevated in the hippocampus. SCA may improve the learning and memory impairment induced by D-galactose by enhancing the antioxidant capacity, and regulating the expression of p19/p53/p21/cyclinD1/CDK4 genes, and the phosphorylation of RB protein in the hippocampus of mice.
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Affiliation(s)
- Cong Liu
- 1 Department of Pharmacology, College of Pharmacy, Beihua University , Jilin, China
| | - Weijing Sun
- 1 Department of Pharmacology, College of Pharmacy, Beihua University , Jilin, China
| | - Ning Li
- 1 Department of Pharmacology, College of Pharmacy, Beihua University , Jilin, China
| | - Jiaqi Gao
- 1 Department of Pharmacology, College of Pharmacy, Beihua University , Jilin, China
| | - Chunyan Yu
- 2 Department of Pathology, College of Basic Medicine, Beihua University , Jilin, China
| | - Chunmei Wang
- 1 Department of Pharmacology, College of Pharmacy, Beihua University , Jilin, China
| | - Jinghui Sun
- 1 Department of Pharmacology, College of Pharmacy, Beihua University , Jilin, China
| | - Shu Jing
- 3 Department of General Surgery, Affiliated Hospital of Beihua University , Jilin, China
| | - Jianguang Chen
- 1 Department of Pharmacology, College of Pharmacy, Beihua University , Jilin, China
| | - He Li
- 1 Department of Pharmacology, College of Pharmacy, Beihua University , Jilin, China
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Wang Q, Yang CS, Ma ZX, Chen JC, Zheng JN, Sun XQ, Wang JQ. Inhibition of prostate cancer DU145 cell growth with small interfering RNA targeting the SATB1 gene. Exp Ther Med 2018; 15:3028-3033. [PMID: 29599837 DOI: 10.3892/etm.2018.5792] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Accepted: 12/08/2017] [Indexed: 12/23/2022] Open
Abstract
Prostate cancer is a common visceral cancer of men worldwide. It is important to develop a more effective treatment for prostate cancer to overcome the treatment resistance that occurs with recurrence. RNA interference has been demonstrated to be a powerful tool for gene knockdown and has potential as a cancer treatment. It has been previously demonstrated that staining of special AT-rich sequence-binding protein 1 (SATB1) was stronger in prostatic carcinoma with metastasis compared with prostatic carcinoma without metastasis. In the present study, SATB1 small interfering (si)RNA was transfected into prostate cancer DU145 cells and normal human lung fibroblast cells, and cell proliferation was investigated using a Cell Counting kit-8. Three siRNA were transfected into cells using siPORT Lipid Transfection agent, and blank control and negative control groups were established. The cells were harvested and SATB1 mRNA and protein expression was determined by reverse transcription-quantitative polymerase chain reaction and western blotting, respectively. DU145 cell adhesion, migration and invasion capabilities were determined using cell adhesion, Transwell and Transwell with Matrigel assays, respectively. Silencing SATB1 significantly inhibited DU145 cell growth, adhesion, migration and invasive capability in vitro, indicating that a SATB1-targeting siRNA was successfully engineered. The results of the present study suggest that SATB1 siRNA may be a potential agent for treating human prostate cancer.
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Affiliation(s)
- Qiang Wang
- Department of Urology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China.,Department of Urology, The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210046, P.R. China
| | - Chun-Sheng Yang
- Department of Dermatology, Affiliated Huai'an Hospital of Xuzhou Medical University, The Second People's Hospital of Huai'an, Huai'an, Jiangsu 223002, P.R. China
| | - Zu-Xin Ma
- Department of Urology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Jia-Cun Chen
- Department of Urology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Jun-Nian Zheng
- Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Xiao-Qing Sun
- Department of Urology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Jun-Qi Wang
- Department of Urology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
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